<template>
  <div class="list" ref="warpper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-warp">
            <div class="button">{{this.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-warp" v-for="(item ,index) in hotCities" :key="index" @click="handleCity(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item, key) in cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list" v-for="innerItem in item" :key="innerItem.id" @click="handleCity(innerItem.name)">
          <div class="item border-bottom">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll';
import {mapState} from 'vuex';
export default {
  name: 'List',
  props: {
    cities: Object,
    hotCities: Array,
    letter: String
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.warpper);
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0];
        this.scroll.scrollToElement(element);
      }
    }
  },
  computed: {
    ...mapState(['city'])
  },
  methods: {
    handleCity (city) {
      this.$store.commit('editCity', city);
      this.$router.push('/');
    }
  }
};
</script>

<style lang="stylus" scoped>
.list
  overflow hidden
  position absolute
  top 1.58rem
  left 0
  right 0
  bottom 0
  .area
    .title
      line-height 0.54rem
      background #eee
      padding-left 0.2rem
      font-size 0.3rem
      color #6b6666
    .border-topbottom
      &:before
        border-color #ccc
      &:after
        border-color #ccc
    .border-bottom
      &:before
        border-color #ccc
    .button-list
      overflow hidden
      padding 0.1rem 0.6rem 0.1rem 0.1rem
      .button-warp
        float left
        width 33.33%
        .button
          text-align center
          padding 0.1rem 0
          margin 0.1rem
          border 0.02rem solid #ccc
          border-radius 0.06rem
    .item-list
      .item
        line-height 0.76rem
        padding-left 0.2rem
</style>
